Kinseij, Ay res: Varieties of a Gall Wasp 161 



the same bush. In some specimens of variety wasatchensis 

 from Brigham, Utah, half of a gall is typical neglecta, the 

 other half of the gall is normal tuberculatrix from which nor- 

 mal gall makers emerged. Abnormal galls of variety cali- 

 fornica, from Salinas, California, do not show so very much 

 difference from the normal galls. Gillette's description of the 

 adult he called neglecta would very well apply to a dark form 

 of variety tuhercidatrix, tho the question of the synonomy of 

 the insect cannot be adequately decided until we can see the 

 types of neglecta. These we have not been able to obtain. 



Meanwhile we feel quite certain that neglecta galls are 

 only inquiline-inhabited galls of tiiberciilcttrix. Even if the 

 Gillette adults do not bear out this conclusion we should main- 

 tain it until someone has bred material sustaining Gillette's 

 data. The association of insects with the wrong galls is liable 

 to occur with our most precautious methods, and that it has 

 occurred abundantly with many published species is being 

 shown repeatedly. When the number of insects thus con- 

 nected is small, the chances of confusion become relatively 

 greater. We have three gall makers bred apparently from 

 neglecta galls from La Grande, Oregon. Two of them are 

 Diplolejois oregoyiensis, which has a small bud gall easily liable 

 to have been bagged with the neglecta material. The other 

 adult is of a variety of Diplolepis hicolor, which has a distinct 

 enough gall, but which in some fashion got into my neglecta 

 bag in spite of considerable precaution. 



The fact that neglecta is one of the commonest of galls, 

 easily obtained by the hundreds, breeding out hundreds or 

 thousands of inquiline Cynipidse without gall makers among 

 them, should have appeared significant. How a gall maker, 

 as rare as this was supposed to be, could produce galls in 

 abundance would be hard to explain. I have definite reasons 

 for questioning the nature of the producer in several other 

 cases of a supposedly rare gall maker, as with the huckleberry 

 gall, Solenozopheria vctccinii Ashmead, and another rose gall, 

 Rhodites glohtiloides Beutenmuller. 



Inquiline-inhabited galls of many other species of 

 Cynipidse have their structure considerably modified. 

 Diplolepis bicolor (Harris), the related D. eglanterix 

 (Hartig), and the species discussed in the next paragraph are 

 examples in the same genus. We do not know exactly in what 



11—21784 



